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In the crystal structure of the title compound, C 21 H 24 F 2 N 2 O 2 , the two N atoms of the imidazolidine moiety are linked to the hy­droxy groups by intra­molecular O—H⋯N hydrogen-bonding inter­actions. The crystal studied was a racemic mixture of  RR  and  SS  enatiomers. The cyclo­hexane ring adopts a chair conformation and the imidazolidine group to which it is fused has a twisted envelope conformation.

4,4′-Difluoro-2,2′-{[(3aRS,7aRS)-2,3,3a,4,5,6,7,7a-octahydro-1H-1,3-benzimidazole-1,3-diyl]bis(methylene)]}diphenol